VIVA OFFICE High Back Bonded Leather Office Chair, Executive Computer Chair with Padded Arms High back bonded leather ergonomic office chair with perfect built-in adjustable lumber support and extra thick padding provides the ultimate comfort Simple pneumatic controls let you raise or lower your seat and rock back in your chair.Pulling out on the control handle, which allows your chair to tilt back, or sit forward and push the control handle in to prevent it from tilting Waterfall seat design eliminates leg fatigue High quality Nylon base and Nylon casters to give great stability Weight capacity is 250 pounds, Easy assembly upon arrival. We provide free component-exchange in 12 months.